Exercise roller



FIG. 1 is an isometric front view of an exercise roller showing the new design;

FIG. 2 is a front view of the design of FIG. 1 the rear, top and bottom views being identical;

FIG. 3 is a right end view of the design of FIG. 1 the left end view being identical; and,

FIG. 4 is a cross-section view of the design of FIG. 2.

The broken lines showing of selected portions the exercise roller is for environmental purposes only and forms no part of the claimed design. 

CLAIM The ornamental design for an exercise roller, as shown and described. 